ASTM A314 Grade S44004 Introduce
ASTM A314 Grade S44004 steel is a type of stainless steel that has been developed to provide superior corrosion resistance and strength. The chromium content of this steel provides good corrosion resistance in mild atmospheres, high-temperature service, and overall good oxidation resistance even in highly corrosive environments. The nickel and molybdenum content contribute greatly to the corrosion-resistance of this steel, as well as its ability to retain mechanical properties even after long periods of exposure. The manganese content provides additional strength and hardness. This steel also has a low coefficient of thermal expansion and has excellent weldability. This steel can be cold worked and has excellent formability, strength, and wear resistance.
Smelting temperature:1277°C - 1632°C
Application:Specification for stainless steel and steel rods for forging and heat
ASTM A314 Grade S44004 Material Chemical Composition
The chemical composition of the ASTM A314 Grade S44004 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0400 |
| Molybdenum (Mo) | - | 0.7500 |
| Manganese (Mn) | - | 1.0000 |
| Chromium (Cr) | 16.0000 | 18.0000 |
| Carbon (C) | 0.9500 | 1.2000 |
ASTM A314 Grade S44004 Material Mechanical Properties
The mechanical properties of the ASTM A314 Grade S44004 steel are as follows:
| YieldRp0.2 | ≤ 651 (MPa) |
| TeileRm | ≤ 447 (MPa) |
| ImpactKV/Ku | 14(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 241 |
ASTM A314 Grade S44004 Material Thermal Properties
The thermal performance parameters of the ASTM A314 Grade S44004 steel are as follows:
| Temperature (°C) | 34 | 141 | 571 |
| Modulus of elasticity (GPa) | - | 443 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 143 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 321 |
| Poisson’s coefficient, ν | - | - | 314 |